Shunt Connects for an Inverter with built-in Charger?
Amazon.com: LNEX Portable Battery Monitor with Shunt, 500A Automotive Car Battery Monitor for RV Battery 10V-120V, with High and Low Voltage Programmable Alarm and 26ft Shielded Wire : Automotive
Projecta Intelli-RV 500A Shunt W Cables | CaravansPlus
Camper Van High Powered Electrical System — Moser Makes